Piston-ring.



W. G. BURDICK.

PISTON RING. APPLICATION FILED MAR13` 1916.

Patented June 20, 1916.

onirica.

wiLLiAi/i n. Bosnien, or ROCHELLE, 'Immers @lle nien. a citizen ot the United States, residing at Rochelle, in the county oi1 Ogle and State oi lllinois, have invented certain new' and useful l1np-1o.'enients in Piston-Rings; and l do declare the following to be a full, clear, and exact description of the invention, such :is will enable others skilled in the art to which it appertains to malte and use the saine.

This invention relates to certain new and useful improvements in packing rings for pistons.

The invention is designed more particularly for use in connection with. pistons of explosive gas engines, although it will loe obvious from the consideration of 'the detailed .descriijition and drawings 'that it is equallyY applicable to other fornis of pistons and similar constructions where metallic packing is used. p

As is well known to those familiar with explosive and expansion engines, where a metallic packing ring is required, the piston is circuinrferentially grooved at one or incre points and a split packing ring fitted snugzjljfv within the groove. with its meeting ends suiiiciently separated to permit expansion of `the ring under heating. The opening, however, provides a path for the gases or duids from one side ot the piston to the other, which steadily increases with wear, thereby i'nateriallv lowering the eiliciencv of the engine and ultimatelyY requiring the repsiring of the piston. f

1Various means have been adopted or sug- ,ilcsted tor obviating this dilliculty, one .of the inost connnon ot' which is the use of a pluralityY ot rings in vwhich the splits or openings therein are located as far as possible on opposite sides oit the piston. llllhile this overcomes the di'liiculty to some extent the construction permits the vfluids to pass the first ring, andr by taversing the groove to the other sidev of the piston, escape through the opening of the second ring. It has heen alsoproposed to join or bridge the ends of the ring in various ways and by difw ferent devices to' prevent the passage of `fluids throughy the cut.

This invention belongs to the latter class ci" ring construction, and consists oi" certain novel features of construction, and the combination and arrangement of parts as will.

is substantially.one-third the width oli the he hereinafter fully described and claimed.

it known that l, Vini/init G. BUR-v Specification of Letters Eatent. jpjgjmnjgpd Jun@ 2q), 1916 Application filed March 13, i916.

Serial No. 83,903,

The accompanying drawings illustrate the preferred forni of the invention# wherein siinilar reference .characters designate like parts throughout the several views.

Figure fl is a perspective view of a piston ring constructed in accordance with this invention, showing the coupler detached from the ring proper; Fig. 2 is a side elevation of a portion of the saine showing the coupler inserted between the ends of the ring; Fig. 8 is a plan view of a portion of the saine; Fig. 4 is a sectional view taken on the plane of the line Ll--l of Fig. 8; and Fig. 5 is a similar sectional view, showing the coupler removed.

ln the embodiment illustrated, ,the reference numeral l designates a split metallic piston packing ring, from. the free ends of which extend spaced lugs 2. These lugs 2 extend circuinterentially relative to said ring and arcrabbeted at the outer sides ot their lree ends as at Disposed between the lugs 9 and extending circuin'terentially trono the ends of the ring l are if-shaped tongues si, the latter be'- ing disposed adjacent the inner sides of said ring and having their outer sides arranged concentricallv relative to the outer-sides or periigiherv ot' the ring` as clearli7 shown by the drawings, while the inner sides of the tongues fl are arranged angularly with respect to the inner side of the ring.

rlhe split or cut between the ends of the ring l is bridged b v a coupler 5, which is received betveen the aforesaid lugs 2 and provided with V-shaped notches 6 at its opposite ends. These notches 6 are disposed adjacent the inner side of the coupler and are inclined outwardly from their outer to,

their inner ends to receive` the l/-shaped tongues `4l carried b v the ends of the ring l, this construction providing a very snug fit, and at the saine time iirinlv holding the coupler in place when the ring is contracted. The outer sides of the tongues 4 bear against the outer walls of the notches 6 while the inner walls of the notches rest against the inner angularlv arranged sides of the tongues and hold the outer side of the coupler flush with the. outer side ot' the ring, the inner side of the coupler being then consequently held flush with the inner side of the ring owing to the fact that the coupler and ring are equa-lin thickness.

As shown lofy the drawings, the coupler 5 piston ring l, with the exception of its interinediate outer side, which is provided with laterally extending wings 7. These wings 7 extend outwardly troni the edges of the coupler and have their iniier sides spaced frein the inner side of the coupler,

. lwhereby they are seated upon the aforesaid V:'ltijieii et this patent may be attained for i'abbeted sides 3 ot the lugs 2.

The ring' is assembled with the piston iii substantially the usual. manner, the bridge piece or coupler, however, being adjusted to the ends ofthe rings yafter it is slipped into the groove'provided for it in the piston.

lt will be seen that with4 a ring constructed in accordance with this invention, leakage directly past the opening or around the packing of the ring is prevented, and the coupler is maintained in proper Contact with the Wall of the cylinder by the pressure of the ring ends, and is therefore independent ofV the gas pressure within the cylinder.

Freni the foregoing description, taken in connection with thev accompanying draw ings, the advantages and operation of the device will be readily understood without a more extended explanation.

It is also to be understood that the accompanying drawings merely illustrate one manner in which the invention may be constructed, and as various niinoi changes in form and .proportion may be resorted te without departing from the spirit et' the invention, I do not wish to liniit niyselt to the Construction herein shown and described other than that set forth in the appended claims.

I claim: l

1. A device' of the'class described coinprising a` split ring having spacedliigs extending ciicuinferentially from the ends thereof, V-shaped tongues disposed between `said lugs and extending circumferentially from the ends of said'ring, said tongues heing disposed adiacent the inner side et said ring and having their outer-sides arranged concentrieally relative to the outer side of the saine, the inner sides oi' said tongues being arranged angularly to the inner side of said ring, and a coupler received between .seid lugs and having its inner and outer Liezen sides flush with the inner and outer sides respectively oi' said ring, said coupler bci-iig; provided with il-shaped notches at its oppoSite ends for receiving,r said toiiigues, said notches being disposed adjacent the inner side ot' said coupler and inclined outwardly from their outer to their inner'ends.

2. A device of the class described coin prising a split ring having,- spaced lugs e tending r-.ii-cuiiiferentially from `the endsthereof, the outer sides of said lugs being ial'ibeted, tongues disposed between said lugs and extending circuniiiereutially 'from the ends et said ring, a coupler received between said lugs and provided with notches at its opposite ends for receiving said tongues', and wings extending laterally from the edges oi the intermediate iiiortion ot said coupler and along`the outer side thereof, said wings being seated on tlie ralibeted sides of said lugs.

3. A device of the class described coinprising a split ring having spaced lugs eze tendingr circuiiiteientially 'from' the ends thereof, the outer sides of said lugs being; rabbeted, lil-shaped tongues disposed between said lugs and extending" cireiiiiiferentially from the ends of said ring, said tongues be.- ins;y disposed adjacent' the inner sides of said ring and having their outer sides arranged conccntrically relative to tlie outer sides of said ring, a coupler received between said lugs and provided with V-sliaped notches at its opposite ends vlor receiving said tongues, said notches being; disposed adjacent the inner side of said coupler and iiiclined outwardly troni their outer to their inner ends, and 'wings extending` laterally. from the edges of the intermediate portion of said coupler and alongr the outer side thereof. said wiii'gs being seated on the rabbeted sides of said lugs.

In testimony whereof have hereunto set my hand in presence of two subscribing,r witnesses.

WILLIAM e. niiiinicir.

`Witiiesses (l. E. Lozinii, F. SULLivAN.

five cents each, by addressing the Commissioner of retenir.. Washington, D. C5. 

